Alloy



Patented Dec. 21,1927.

UNITED STATES PATENT OFFICE.

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' v COLLINS, or new $031!, N. Y.

ALLOY.

No Drawing. Application flled Ieb ruary 85, 1922, serial'llfo. 589,098.Renewed Kay 18, 1927.-

This invention relate'sto alloys. An object of this invention is toprovide a non-ferrous alloy havin metallic properties generally butwhich is ee from substantial attack by sulphuric, nitric andhydrochloric acids, ammonia (chloride, acetic acid, chlorine, ammonia,mine waters, alkalies, also free from attack by sulphurous fumes and 1the'gasesevolved in the production, refining and manufacturing of oils,and also. free from attack by common hypo-chlorites and hypo-sulphites.

Pursuant to my invention, the alloy comprises nickel, tungsten,chromium, man a- 1 .nese and'magnesium, the nickel'contenteing ofrelatively high "proportion relative'to tungsten and chromium,-'themanganese con-" tent being less than the tungsten (or: chromium content,and the magnesium content of relatively low proportion' relative to tungsten and chromium.

In the various forms of the invention, thenickel content varies withinthe range .of

to 65 per cent,.the tungsten content from'15 to per cent,-*the"chromiumrcontent 'from 15 to 30 per cent, the man anese content from 1to 8 percent and t e magnesium from 5 to one-half fof one per cent. .Thenickel content preferably. exceeds the sum of the content of tungstenand the content of chromium. v The nickel content of the alloy is added.in the form of a nickel containing ingredient or ingredients free fromsulphur.

' The alloy is formed by taking ingredients embod in theabovei'metalsrespectively in metallic iorm and. heating ,the. mixture,

whereupon the metal contents of nickel tul'lg sten, chromium, manganeseand magnesium 4 are merged into an alloy. I v

The-most preferred methodof forming the alloy is by taking thecommercially pure metals in the'proportions as above named and meltingthe same to obtain an inter- 4 mixed molten mass,. which upon coolingyields the solid alloy of-the above constitu- -of the tungstenandchromium contents, the

tungsten and chromium contents being substantially equivalent; themanganesecontent being less than each of the tungstenand chromiumcontents and. the magnesium content being less than the manganesecontent. 'The alloy possesses .metallic' pro erties, but issubstantially free from attack y sulphuric acid, or by nitric acid, orbyhydrov chloric acid. Thealloy is also free from attack by sulphurousfumes, lime water,-6 chlorine and the gases created in the distillin'gand-refining of crude petroleum and other mineral oils." The alloy also.free from attack by calcium and other common commercial hypo-chloritesand-by and other 5 common commercial hyposulphites.

I I claim: 1 p

1. in alloy consisting ofnickel in the proportion of from jthi' typercent to sixty-five percent; of tungsten in the proportion of trainfifteen? percent to forty percent; of.

chromium'fin the proportion of fromfifteen percent to thirty percent; ofmanaganese in the proportion offrom one" percent toeight 7 percent; and,of magnesium in the rtipon" tion of from five-percent to one-hal of .onepercent.

, 2. 'An alloy consisting of nickel in the proportion of. from thirtypercentt0 sixty-five, percent; of tungsten and chromium insubstantially'equivalent proportion to one'another; of manganese in theproportion offrom one percent to eight percent; and of magnesium'inthe proportion offrom five 5 'pe'rcent jto' one-half percent, the aforesaid proportionstotalling one hundredpercenh In testimony whereof I.have' signed thisspecification this 24th of February, 1922.

WARD KIAM. I

